3 Replies
      Latest reply on Apr 12, 2018 12:18 AM by cujo30227
      cujo30227 Level 1 Level 1 (0 points)

        Hi,

         

        Since iOS11.3 I'm getting a significant number of new crash reports from my AR measurement app.

         

        The crash description says:

        Exception Type: SIGABRT

        Exception Codes: #0 at 0x181b112ec

        Crashed Thread: 0

        Application Specific Information: *** Terminating app due to uncaught exception 'std::invalid_argument', reason: 'extrinsicTransform must have determinant 1.'

         

        The crash is triggered by this line in my code, which is called on didUpdateFrame

        NSArray<ARHitTestResult *> *resultArray = [_arsnView hitTest:position types:ARHitTestResultTypeExistingPlaneUsingExtent | ARHitTestResultTypeEstimatedHorizontalPlane];

         

        According to the crash reporting, it happens to about 10% of the sessions (!!!!). Before iOS11.3, I had <0.1% crashes.

         

        I tried feeding the hitTest with different values for position, including NaN etc, but I'm not able to reproduce the crash.

         

        Any ideas?

         

        Thanks!!